One problem related to manual transmission has been reported for the 2003 Cadillac CTS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Cadillac CTS based on all problems reported for the 2003 CTS.
Transmission 5th gear keeps going out, origional and new trans. Have both gone out, all within 200 miles. Gm will not fix the problem, because they have told me they don't know how to fix it. They wanted me to continue driving it, but I refused and after complaining for a week I was given a loaner. They don't even know if there is a safty issue or not.